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Family name Rengel (Rengel , 伦格尔 ) , in all the world, is a common cognomen. The family name Rengel is characteristic of Venezuela, where it is quite a common surname, Bolivia, and Croatia, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Latin America and the Caribbean, particularly Venezuela, Brazil, and Bolivia. Much less frequently, Rengel is the forename as well as the last name.